STAINLESS STEEL PRODUCTS

Stainless steel is a corrosion resistant steel alloy with a minimum of 10% chromium. There are different grades and surface finishes of stainless steel produced to accommodate the environment in which the material will be implemented. Unlike carbon steel, stainless steel does not rust when exposed to air and moisture due to the sufficient amount of chromium present. The chromium creates an invisible passive film of chromium oxide that will not let oxygen attack the surface and prevents rusting of the iron base.

Haohua Industry is a stainless steel distributor of more than 20 grades of Stainless Steel.

Chromium is their major alloying element
Ductility and formability less than austenitic grades
Magnetic
Highly corrosion resistant, less durable than austenitic
Cannot be hardened by heat treatment
Contain between 10.5%-27% chromium and very little nickel
Common grades: part of the 400 series like 409, 410S, 430

Austenitic Stainless Steels

Comprise of 70% of total stainless steel production
Hardenable by cold working
Usually non-magnetic
High hardness and yield strength
Contain a maximum of 0.015% carbon, minimum of 16% chromium and sufficient nickel and/or manganese
Superaustenitic stainless steels (AL-6XN and 254 SMO) have great resistance to chloride pitting and crevice corrosion
Common grades: 300 series like 304, 316, 320, 321, 347,309

Designed to be formable in the solution annealed condition
Can be hardened by heat treatment
Contain chromium and nickel as major alloying elements
Corrosion resistance is usually better than that of straight chromium ferritics
Most common grade is 17-4PH